Figure 7
From: Precision and accuracy of the subjective haptic vertical in the roll plane
Average (± 1 StdDev) trial-to-trial variability of SHV (black circles) and SVV (gray squares; from [8]) from all subjects is shown as a function of head roll. Note that variability values are reported in a logarithmic scale. For both SVV and SHV, variability increased with increasing roll, peaked in the range of 120-150° and decreased again to intermediate values in upside-down orientation.